Is AD 2005-13-17 a recurring Airworthiness Directive?

No — AD 2005-13-17 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2005-13-17 apply to?

AD 2005-13-17 applies to Agusta — models AB412, 412. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2005-13-17

one-time

Official AD 2005-13-17 · FR doc 05-12419 · 2005-06-24 · airframe

Airworthiness Directives; Agusta S.p.A. Model AB412 Series Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD) for the Agusta S.p.A. (Agusta) Model AB412 Series helicopters. This action requires inspecting each affected tail rotor blade (blade) forward tip weight retention block (tip block) and the aft tip closure (tip closure) for adhesive bond voids, and removing any blade with an excessive void from service. This AD also requires modifying certain blades by installing shear pins and tip closure rivets on all affected blades. This amendment is prompted by reports of in-flight loss of tip blocks and tip closures resulting in minor to substantial damage. The actions specified in this AD are intended to prevent loss of the tip block or tip closure, loss of a blade, and subsequent loss of control of the helicopter.

Which aircraft AD 2005-13-17 applies to

MakesAgusta

ModelsAB412, 412

Serial-conditional — narrows to serials 11530–13594, 13603–13618.

Part-conditional — 212-010-750-All.

Applies only if tail rotor blade P/N 212-010-750-All, S/N with prefix 'A' or 'A-FS', is installed. S/N range 11530 through 13618 excludes S/N 13595 through 13602.

Whether AD 2005-13-17 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD 2005-13-17 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.